21270246430 has 16 divisors (see below), whose sum is σ = 38291367024. Its totient is φ = 8507004480.

The previous prime is 21270246379. The next prime is 21270246451. The reversal of 21270246430 is 3464207212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21270246392 and 21270246401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52647 + ... + 212866.

It is an arithmetic number, because the mean of its divisors is an integer number (2393210439).

Almost surely, 2^21270246430 is an apocalyptic number.

21270246430 is a deficient number, since it is larger than the sum of its proper divisors (17021120594).

21270246430 is a wasteful number, since it uses less digits than its factorization.

21270246430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273531.

The product of its (nonzero) digits is 16128, while the sum is 31.

The spelling of 21270246430 in words is "twenty-one billion, two hundred seventy million, two hundred forty-six thousand, four hundred thirty".